List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.
ELEMENT | PERFORMANCE CRITERIA |
Elements describe the essential outcomes. | Performance criteria describe the performance needed to demonstrate achievement of the element. |
1 Prepare work area | 1.1 Work area is made clean and functional prior to commencement of work 1.2 Equipment is inspected to ensure it is functional and, where necessary, appropriate remedial action is taken prior to commencement of work 1.3 Chemicals are prepared, if necessary, according to work health and safety (WHS) requirements and manufacturer or supplier specifications |
2 Prepare screen | 2.1 Screen is selected according to job specifications 2.2 Chemicals are applied and removed according to WHS requirements and manufacturer or supplier specifications |
3 Select and process capillary film | 3.1 Capillary film is selected according to requirements for ink type, print resolution, substrate and machine type with minimisation of waste 3.2 Capillary film is cut to size according to WHS requirements and manufacturer or supplier specifications with minimisation of waste 3.3 Capillary film is mounted on screen according to manufacturer or supplier specifications 3.4 Screen is dried according to manufacturer or supplier specifications and enterprise procedures 3.5 Backing sheet is removed according to manufacturer or supplier specifications |
4 Process material | 4.1 Screen is placed in vacuum frame with positive positioned according to manufacturer or supplier specifications and job specifications 4.2 Exposure is calculated and stencil exposed according to manufacturer or supplier specifications 4.3 Light source is positioned according to manufacturer or supplier specifications 4.4 Exposed screen is removed from vacuum frame according to WHS requirements and manufacturer or supplier specifications 4.5 Exposed screen is washed out according to WHS requirements and manufacturer or supplier specifications |
5 Dry stencil | 5.1 Processed stencil is dried according to manufacturer or supplier specifications 5.2 Backing sheet is carefully removed and stencil checked for full adhesion |
6 Block out screen | 6.1 Stencil is inspected for flaws, scum and orientation 6.2 Non-image areas of prepared screen are blocked out with filler suitable for ink type and according to job specifications 6.3 Pinholes are spotted out with suitable filler and faulty or damaged images are retouched and taped according to ink type and job specifications |
7 Store screen | 7.1 Prepared screen is labelled according to enterprise specifications 7.2 Prepared screen is stored in clean, dry environment according to manufacturer or supplier specifications |
Evidence of the ability to:
correctly prepare TWO different direct screens using automatic coating equipment and expose, wash and dry the screen according to all manufacturer, job, enterprise and workplace safety requirements.
Note: If a specific volume or frequency is not stated, then evidence must be provided at least once.
To complete the unit requirements safely and effectively, the individual must:
outline work health and safety (WHS) requirements when degreasing screens
identify the significance of the mesh count and the selection of mesh count for the application of a capillary stencil
discuss the impact of correct tension on the screen
identify the chemicals that are used for degreasing screens
outline the maintenance procedures that are employed for equipment in the stencil preparation area
describe the peculiarities of photographic capillary stencils and the selection process
identify pollution and environmental concerns to be addressed when working with capillary films
identify wetting agents that are used to facilitate the application of the film to the screen
outline problems that are caused by dust on the surface of the mesh
discuss the importance of the position of film on the screen, the problems that can occur from poor or incorrect mounting techniques and how they can be rectified
outline WHS concerns related to exposing stencils
describe the correct drying distance and drying time, how these are calculated and the effects of incorrect drying temperatures
discuss the need to dry film under safelight conditions and the function and use of a light integrator
outline the removal of the backing sheet
describe the effect that the position, angle and distance of the light source has on the exposure process
outline the effect that temperature, pressure and time taken has on the washing out process
describe the importance of blotting up excess water from the stencil to prevent scum and streaking
outline how to determine when a stencil is dry
explain how the ink and stencil types affect the blockout
outline preventive measures that can be taken to prevent pinholes, and the importance of taping the edge of the frame
describe how a screen can be identified at a later date
identify maintenance that should be carried out on exposing, washing and drying equipment
identify required manuals, safety and other documentation and briefly outline the relevant information in each source.
Gather evidence to demonstrate consistent performance in conditions that are safe and replicate the workplace. Noise levels, production flow, interruptions and time variances must be typical of those experienced in the screen printing field of work and include access to chemicals and relevant equipment.
Assessors must satisfy NVR/AQTF assessor requirements.